This is 4116 dram tester. I order clear pcb rev2 and assemble. Now works fine. Actually it need for repair atari 65xe with damaged ram. Now I can repair my atari! ;)
gerber available on my site, as well as bom list
Schematic also can help while assembling.
ps. several mods available from Alex Wierzbowsky [RBSC] on his github
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